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\hypersetup{pdftitle={Gum Arabic as an Organic Material Produced from \textit{Acacia Senegal} Trees},pdfauthor={Mohamed E. Osman Elsayed, Muneer Elyas Siddig Eltahir, Osman Elsaid Adlan Abdelkareem},pdfsubject={Tropentag 2016: Abstract},pdfkeywords={Emulsifying agent , Gum Arabic, keywords: Acacia senegal, organic, stabilisers},pdfpagemode=None,colorlinks=true}
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\parbox[b]{13.4cm}{\centering \large{\textbf{Tropentag, September 18-21, 2016, Vienna, Austria}}\\[1ex] \Large{``Solidarity in a competing world ---\\fair use of resources''\\[2ex]}}
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\Large{\textbf{Gum Arabic as an Organic Material Produced from \textit{Acacia Senegal} Trees\footnote{\textbf{Contact Address:} Mohamed E. Osman Elsayed, University of Kordofan, Gum Arabic Research Centre, Aljamaa Street, 51111~Elobied, Sudan, \mbox{e-mail}: \email{mustafa22274@hotmail.com}}\\[0.8ex]}}
\normalsize{\textsc{Mohamed E. Osman Elsayed$^{1}$, Muneer Elyas Siddig Eltahir$^{2}$, Osman Elsaid Adlan Abdelkareem$^{3}$}}
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\begin{itemize*}
\item[]{\small{\textit{$^{1}$University of Kordofan, Gum Arabic Research Centre, Sudan}}}
\item[]{\small{\textit{$^{2}$University of Kordofan, Gum Arabic Research Centre, Sudan}}}
\item[]{\small{\textit{$^{3}$University of Kordofan, Forestry and Range Sciences, Sudan}}}
\end{itemize*}
\index[author]{Elsayed, Mohamed E. Osman}
\index[author]{Eltahir, Muneer Elyas Siddig}
\index[author]{Abdelkareem, Osman Elsaid Adlan}
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\textbf{Abstract}
\begin{abstract}
\normalsize{
Gum arabic is a dried exudates obtained from stems and branches of \textit{Acacia senegal} (L.) Willd and Acacia seyal trees. Gum Arabic consists mainly of high molecular weight polysaccharides and their calcium, magnesium and potassium salt, which on hydrolysis yield arabinose, galactose, rhamnose and glucuronic acid. Food additive number of gum arabic is recognised as E414. Gum arabic is a product that is \mbox{100\,\%} organic; all silvicultural practices are subjected to organic farming system activities. This research paper gives an idea about the production cycle of gum Arabic from \textit{Acacia senegal} and illustrates its quality aspects. It also highlights uses, applications and processing of gum Arabic. The main findings showed that production cycle of gum arabic starts by tapping the trees during the dry season followed by collection which starts forty five days after tapping. Producers use special tools for tapping and collection of exudates. Collection interval is done twice a month while number of picks reaches up to six pick per season in average. The physiochemical properties such as moisture, ash, nitrogen contents in addition to optical activity, viscosity, pH value are the main characteristics of gum arabic to explore mixture. According to FDA and JECFA gum Arabic is recognised as safe material. The uses of gum arabic are innumerable, is it is used as binding agent in food such as confectionery, bakery and diary products, in soft and alcoholic drinks either as a vehicle for flavoring or as a stabiliser or clouding agent. In pharmaceutical, it functions as a binding agent or as a coating prior to sugar coating. It is also used as a suspending and emulsifying agent. Gum arabic is exported either in different forms; raw as hand"=picked selected, processed such as kibbled, powder and spray dried. The study recommended following quality aspects in all silvicultural and processing steps of gum arabic.}

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\noindent \textbf{Keywords:} Emulsifying agent , Gum Arabic, keywords: \textit{Acacia senegal}, organic, stabilisers
\index[key]{Emulsifying agent }
\index[key]{Gum Arabic}
\index[key]{Keywords: Acacia senegal@\textit{Acacia senegal}}
\index[key]{Organic}
\index[key]{Stabilizers}
\end{document}
